1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614f2e50fd7d7773b90b83b7934355c4d1d7cdc966d37d2148e2104d68362bee. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/79380c73-fe36-466e-a2b5-ce0eedc52bdf.json and https://artists.proofprofile.net/proofs/artist/79380c73-fe36-466e-a2b5-ce0eedc52bdf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04459a5d1f9b49cfc6fb7d6fd68661b563182d42a684e21d5ec67c83ce8f65fa. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7vvEe4KVLECYTHIT15NW1K.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7vvEe4KVLECYTHIT15NW1K.
{"copyright_id":"0x985eee32d97ebd5d8121c06a606d934ae2683f40da8be72b5fde33c19fdd0818","isrc":"QM84B1822002","name":"Holy Lands","registered_at":"2026-06-19T09:26:40Z","spotify_id":"0RG3Op4mFYBKtQmsPVLqBz","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985eee32d97ebd5d8121c06a606d934ae2683f40da8be72b5fde33c19fdd0818. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0RG3Op4mFYBKtQmsPVLqBz.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0RG3Op4mFYBKtQmsPVLqBz.
{"copyright_id":"0x7bf1b49747617c53d2024aeba54fd511df011141a57ba0584abcfdc0f0eccd67","isrc":"QM84B1822003","name":"Young Genius","registered_at":"2026-06-21T21:34:42Z","spotify_id":"0FQYMJXnVbmeHM59yoLIFn","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf1b49747617c53d2024aeba54fd511df011141a57ba0584abcfdc0f0eccd67. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0FQYMJXnVbmeHM59yoLIFn.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0FQYMJXnVbmeHM59yoLIFn.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e7cc18768e89bb78c014ddd36e0add260f9c210dc682b9ca60a297028973c8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0sOh0y0A1rRDwTm9cwTuKL.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0sOh0y0A1rRDwTm9cwTuKL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5610dfbefb338ca05df48fbc4f51476d54c291e8c1dec3e92a085ead54156966. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1QoDMEtMEXUOOFX6818rN2.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1QoDMEtMEXUOOFX6818rN2.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ceb4e7c4ccdc6d962da2c5c206a9001b89bd63f552e234dc70d23a1e4bbecd3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/50QdIoPULFSKfpLChxRlCH.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/50QdIoPULFSKfpLChxRlCH.
{"copyright_id":"0xf6fafa2a55f936adb2a9b73c7d525e235148056dfde06d391f528104aecd5c2e","isrc":"USZDB0810054","name":"Line Of Flight","registered_at":"2026-06-18T21:55:51Z","spotify_id":"5TULlmRpylLKB1d2TTgJUP","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6fafa2a55f936adb2a9b73c7d525e235148056dfde06d391f528104aecd5c2e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5TULlmRpylLKB1d2TTgJUP.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5TULlmRpylLKB1d2TTgJUP.